Unless someone replaced it with an open rear end it has a locker type.
Chevrolet silverado locking rear differential.
If it s got the g80 code then it came with a locker.
Click on a differential below to view photos measurements and carrier breaks as well as applicable models and available parts for that particular fitment.
Randys carries gm differentials from the small 6 5 as found in the chevy vega up to the larger gm 11 5 common under 3 4 and 1 ton trucks from chevrolet and gmc.
According to gm the g80 automatic locking rear axle is available on most silverado models and is standard on ltz and z71 versions of the silverado 1500 and all silverado 2500 and 3500 hds.
Will post solution when solved pretty sure its the locking mechanism.
Look for the code g80 on your glove box sticker.
Today its prevalence has grown to include every body on frame.
From the ever dependable silverado to the speedy corvette and the rugged blazer chevy makes vehicles for a wide range of functions.
Customers in the market for a mid or full size pickup truck are well aware of the benefits that come with a rear locking differential.
The new trucks have a locer type limited slip rear end.
Whether you drive a chevrolet truck van 4 4 classic sedan or muscle car randys has you covered for drivetrain and differential parts.